Safety igniter for gas burners



Oct. 31, 1933. A. WILD 1,933,129

SAFETY IGNITER FOR GAS BURNERS Filed Jan. 27. 1931 2 Sheets-Sheet l awe/$7,

Ann 11d Oct. 31, 1933. w 1,933,129

SAFETY IGNITER FOR GAS BURNEHS Filed Jan. 2'7. 1931 2 Sheets-Sheet 2 Patented Oct. 31, 1933 UNITED STATES PATENT OFFICE This invention relates to improvements in a safety igniter for gas burners.

One of the objects of the present invention is the provision of a device of the above character which includes in its construction a normally ignited pilot adapted to be arranged in close proximity to a plurality of burners and has leading therefrom a conduit which is provided in the end thereof with a flash head, used for supplying the fuel for igniting the burner from the normally lighted pilot.

Another object of the present invention is the provision of a normally lighted pilot arranged in spaced relation relative to a plurality of burners and having conduits leading therefrom toward said burners, with flash heads in the outer ends of the conduits carried by the burners and having conductors leading from the flash heads to the fuel supply, together with means for admitting the supplying of fuel to the flash heads when the valve members for the burners are moved to an opened position, creating a supply of gas within the conduits for igniting the burners from the normally lighted pilot.

Another object of the present invention is the provision of a safety igniting device for gas burners, which includes a normally lighted pilot with flash heads carried by the burners and adapted to be supplied with fuel, when the valves controlling the flow of fuel to the burners are moved to a completely opened position, the flash heads receiving a supply of fuel through separate conductors and directing the supply through conduits whereby the fuel would become immediately ignited from the normally lighted pilot and conveyed to the burner for igniting the same.

A further object of the present invention is the provision of a device of the above character which provides means for igniting the burners at any time during the time a supply of fuel is turned in to the burner, whereby should the burners become blown out or put out in any incidental manner, the safety igniting device will immediately relight the burner before any great amount of gaseous fuel has escaped in the room in which the device is located, thus decreasing the dangerous effects of escaping gas.

With the above and other objects in view, the invention consists in the novel features of construction, the combination and arrangement of parts hereinafter more fully set forth, pointed out in the claims and shown in the accompanying drawings wherein:

Figure 1 is a plan view of a stove constructed in accordance with my invention, with parts thereof broken away and illustrated in cross section;

Figure 2 is a longitudinal sectional view taken through the normally lighted pilot and one of the burners;

Figure 3 is a detailed sectional view illustrating the manner in which the control valve will be actuated to admit fuel to the flash heads:

Figure 4 is a detailed sectional view illustrating one position of the valve member;

Figure 5 is a detailed sectional view illustrating another position of the valve member; and,

Figure 6 is a detailed section illustrating an other position of the valve member or in closed position for cutting off the supply to the flash heads.

- Referring more particularly to the drawings, 1 indicates .the burner supporting section of a stove and 2 the oven section. Arranged at one side of the burner portion 1 of the stove, is a main" fuel supply conduit 3 having conduits 4 and 5 leading therefrom to the burners 6 and '7, the burners 6 indicating the burners which are adjacent the front portion of the stove and connected up by means of the conduits 4 with the main conduit 3, while the burners '7 are the burners adjacent the rear of the burner section of the stove and connected up by means of conduits 5 to the main conduit 3.

Extending inwardly from the main conduit 3 is a tube 8 which leads to the body portion 9 of a normally lighted pilot, the burner for this pilot being indicated at 10 and disposed beneath an outlet portion 11 which leads upwardly into the upper portion of the body 9, as shown in Figure 2. The upper portion of the body 9 is closed by means of a perforated cover 12. Leading in different directions from the body 9 and communicating with the interior thereof are a plurality of conduits 13 which lead toward each of the burners 6 and 7 and receive therein the substantially rectangular heads 14 on the flash heads 15.

The flash heads 15 each includes a cylindrical body 16 fitted within a transverse opening in each one of the burners, as shown in Figure 2. The cylindrical body 16 is provided at one end with an annular flange 1'7 adapted to rest upon the upper ofiset portion of each burner and the cylindrical body 16 is retained in position by means of a clamping nut 18.

The rectangular head 14 fits within the slot 19 in each one of the conduits 13 to securely retain the outer ends of these conduits in position, and each one of these heads 14 is provided with a transverse bore 20 which communicates with the interior of the cylindrical body 16 and connects with the inner end of conductor 21 for each flash head which leads into the body 16, as shown in Figure 2.

The normally lighted pilot 10 is connected by means of the tube 8 to the needle valve 23 which in turn is connected to the main conduit 3, as shown at the left in Figure 2. Thus, the normally lighted pilot 10 can be continuously supplied with gaseous fuel.

Arranged adjacent the main conduit 3 are a plurality of valves 24 which connect up with the main conduit 3 and have an internally threaded outlet 25 for the tubes or conductors 21.

The core 26 of each valve 24 is provided with a Venturi passage 27 which forms a direct communication between the main supply conduit 3 and the branch conduits 4 and 5, and it will be noted that in Figure 4, the Venturi passage 27 is cut off from the two passages 28 and 29 which form a direct connection to the conduits 4 or 5;. However, in Figure 5, the Venturi 27 connects passages 28 and 29, supplying gaseous fuel to the conduits 4 or 5 and at the same time the short passage 30 is connected up with the outlet 25 so that fuel is being supplied to the flash head 15.

In view of the fact that each burner is provided with a flash head and also with a control valve 24, it will be apparent that any one of the handles 31 can be actuated for turning the fuel into one of the burners. However, in order to connect passage 30 with outlet 25, it will be necessary to rotate the valve core 26 until the stop pin 32 carried thereby moves over and compresses the rod 33 which is connected to a plunger 34 operating in the cylinder 35. This cylinder 35 is carried by the valve casing 36 and arranged at one side thereof. as shown in Figure 3. When the valve core has been rotated until the pin 32 is in the position shown by the dotted lines a in Figure 3, the Venturi passage 27 opens passage between the main conduit 3 and the passages 28 and 29. However, upon further turning movement of the core 26, the pin 32 will engage the outer end of the rod 33 and compress the plunger 34 against the tension of the coil spring 37 in the cylinder 35. This additional turning movement of the core connects the passage 30 with the outlet 25 and supplies fuel to the flash head 15.

When any one of the valve members 24 is opened to supply fuel to the burner to which it is connected, the flash head can be actuated by fully opening the valve to the position shown in Figure 5, which will supply fuel to the flash head carried by this particular burner.

The fuel supplied to the flash head will enter the transverse bore 20 in the rectangular portion 14 and travel through the conduit 13 where it will be ignited from the main pilot 10 and the back flash from this ignited fuel will be carried directly across the burner which supports the flash head and, therefore, ignite the. burner im mediately following the supply of fuel to the flash head which will act as a pilot. I

The oven 2 is provided with the burner members 38 and 39, both having a fuel supply pipe 40 connected therewith and connected up with a control valve 41 for the oven. Extending from the valve 41 is a conductor tube 42 which has a branch 43 at its outer end, the main portion of the tube having a flash head 44, while the branch 43 has a flash head 45. The flash heads 44 and 45 are arranged within a tubular conduit 46 which leads into the housing 9 01. the main pilot burner, as shown in Figure 1.

It will be apparent that when the control valve 41 is actuated for admitting fuel to the burners 38 and 39, the flash heads 44 and 45 can be supplied with fuel when the valve 41 is moved to a fully opened position, thus quickly igniting the burner immediately following the admittance of fuel therein.

The burner 39 has a flash head 47 arranged adjacent one end thereof and is connected up by means of the tube 48 to the control valve 41. This pilot 47 will remain ignited while the valve 41 is in an opened position, but not in a fully opened position which is necessary to ignite the flash heads 44 and 45.

It will be apparent that should the oven burnstove is located.

Another feature to which I wish to call attention is the fact that after any one of the burners has been supplied with fuel through the opening of one of the valve members 24, the fuel passing into the bony of the burner will enter the cylindrical body 16 of the flash head through the apertures 49, passing upwardly and out through the transverse bore 20 into the conduit 13 where it will travel toward the housing 9 of the main pilot and be ignited, thus there will be only a small amount of gas escaping into the room before the burner can be ignited in this manner. However, to quickly ignite the burner. the valve 24 which is turned on should be immediately rotated to a full opened position so as to bring the passage 30 into connection with the outlet 25, so as to supply the flash head with fuel immediately upon the supplying of fuel to the burner, and this will quickly ignite the burner so as to prevent any escape of the fuel into the room.

Another advantage of this type of flash head is the fact that it is carried by the burner and housed therein so that should the flame of the burners or of the flash heads be put out by a vessel boiling over above the burner, the fuel within the burner will readily pass through the apertures 49, up through the flash head and into the conduit 13, where it will pass to the main pilot 10 and again ignite the burner before any dangerous amount of fuel has escaped therefrom.

It will be noted that each flash head is in direct communication with the body of each burner, whereby should the burner become extinguished through any means whatever, the flash head will act as a continuous pilot for reigniting the burner after being put out. Attention is directed to the fact that each flash head is continuously burning while fuel is supplied to the burner and the burning portion of the flash head is protected by the upper portion of the conduits 13 so that as long as fuel is supplied thereto the flash head will continue burning should the flame of the burner become extinguished.

Owing to the peculiar construction, it will be apparent that any draft through an open door or window will not interfere with the ignition of the burner, as the flash head is arranged within the tubular conduit 13.

In fact this type of flash head is exceedingly valuable for maintaining the burners in an ignited condition, during the time any fuel is being supplied to the same. i The device is very simple in construction and can be incorporated into the construction of a stove with but very little increase in the cost of manufacture of the stove, so that the increase in the retail price of the stove will be very small.

I claim: 1. A stove including a plurality of burners, a flash head carried by each burner and having communication therewith, a fuel supply for the burners, an independent fuel supply for the flash heads, manually controlled means for simultaneously admitting fuel to the fuel supply for said burners and flash heads, a normally lighted pilot common to all flash heads, means forming communication between the flash heads and pilot whereby to cause ignition of any one of said flash heads and its respective burner when fuel is supplied thereto, and means whereby to maintain each flash head in the lighted condition for igniting said burner during the time fuel is supplied thereto.

2. A stove including a burner, a flash head in direct communication with said burner, a-

main supply of fuelfor the flash head and burner, manually controlled means for supplying fuel to said burner, said control means initially simultaneously supplying fuel to said flash head and burner, and means for automatically cutting off the initial supply to said flash head after the lighting of the burner.

3. In a stove, a burner, a flash head for the burner arranged adjacent thereto, a normally lighted pilot for the flash head, a fuel supplypipe, a manually operated valve for supplying fuel to the burner and flash head when the same is in one position, and automatic means for moving the valve to another position, whereby to cut off the supply of fuel to the flash head from the fuel supply pipe after manual operation of the valve and the lighting of the burner.

4. In a stove, a plurality of burners, a normally lighted pilot light centrally disposed relative to the burners, a fuel supply pipe, an incle pendent flash head for each burner, a hood connecting the flash head of each burner with the pilot light, a manually operated valve for each burner and flash head controlling the flow of fuel thereto, and resilient means for automatically operating an actuated valve to close the flow of fuel from the fuel supply pipe to the flash head after lighting of a burner.

5. In a stove, a burner, a flash head for the burner, a normally lighted pilot for the flash head, a source of fuel supply, a common valve for controlling the flow of fueljo the burner and flash head, said valve including a casing having diametrically disposed ports for the burner and an angularly disposed port for the flash head, a rotary valve plug mounted in the casing having a diametrical way therethrough 95 and an angularly disposed way, the terminals of the diametrical way being flared whereby the plug can be positioned for adjusting the diametrical way in registration with the diametrically disposed ports and the angularway in registration with the angularly disposed port or the plug positioned with the diametrical way in registration with the diametrically disposed ports only and the angular way out of registration with the angularly disposed port.

6. In a stove, a burner, a flash head for the burner, a fuel supply pipe, a manually operated valve for controlling fuel to the burner and flash head, the valve in one position supplying fuel to the burner and flash head, and automatic 11) means for moving the valve to another position whereby to out off the supply of fuel to the flash head from the fuel supply pipe after manual operation of the valve and the lighting of the burner.

ALFRED WILD. 

